import javafx.util.Pair;

import java.util.Map;
import java.util.PriorityQueue;
import java.util.Scanner;
import java.util.Stack;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: ling
 * Date: 2022-09-04
 * Time: 21:31
 */
public class Test9 {

    public static void main(String[] args) {
        int i=1;
        int j=2;
       String str=Integer.toString(i)+','+Integer.toString(j);
        System.out.println(str);
    }
    public static void dfs(int n,StringBuilder str) {
        if(n==0) {
            return;
        }
        int tmp=n%2;
        dfs(n/2,str);
        str.append(tmp);
    }
}
